The Vent-Axia T-Series TX9PL is designed to fit in internal partitions, ceilings, ducts and, with louvred grilles, through external walls. When installed only the louvred grille is visible. Comes with a speed control pack which enables high, medium or low speed to be preset to suit room size or required duty. Alternatively, a range of speed controllers and sensors are available for remote control of the fan. The integral internal shutter works automatically and instantly on operation but can be set to be left open when the fan is switched off in order to allow natural ventilation (Requires T-Series controller to perform this function). All parts are designed to be dismantled easily without specialist tools to enable easy cleaning. The fan\'s motor and shutters are designed to run with the fan mounted at any angle.